A fun and simple way to introduce the serve.
Using the underhand serve players pass the ball over the net one another.
There should be no loose balls here, players should focus on accuracy as they aim to get the ball up and over.
Once again players should be stepping forwards with the opposite leg to the hand that you serve with.
Start close to the net, and then if you are successful take one step backwards until you can serve from the baseline to each other.
New hitters rarely miss because of their arm. They miss because of their feet. Build a reliable approach, then time it with your setter.
When your hitter gets stuffed, five teammates standing and watching is how you lose the point. Good attack coverage turns a blocked ball into a second swing.
Coaches spend hours correcting arms in serve receive when the real fault is almost always the feet. Fix the movement and the platform fixes itself.